Anita's acrylic paint globs

My biggest newest love is the Anita's acrylic paint. I love that I can have a lot of paint color options for my projects and paintings for a price that doesn't cost me my first born. I finally decided that for as much as I use the paint to purchase the 16oz bottles but have noticed issues with there being globs in the bottles. I always make sure I shake the bottles really well before using but that doesn't solve the problem and I don't want to add water for fear of it diluting and losing the rich pigments of the paint. The big culprits I've learned are the white and black. Any solution ideas?